Amphastar Pharmaceuticals ($AMPH) Insider Trading & Smart Money Activity

Amphastar Pharmaceuticals, Inc. · Drug Manufacturers - Specialty & Generic · Latest filing Sep 21, 2026

Amphastar Pharmaceuticals, Inc. ($AMPH) has 1 insider trade and 2 analyst ratings on file. In the last 12 months on the open market, no insider bought and 1 insider sold ($103.47K), net -$103.47K.

Insider buyers (12 mo): 0
Insider sellers (12 mo): 1
Net insider $ (12 mo): -$103.47K
Congress trades (12 mo): 0
13F moves on file: 0
Analyst ratings on file: 2

AMPH insider buying and selling by quarter

Quarter	Insider sales	Congress buys / sales	13F added / cut
Q1 2026	0	0 / 0	0 / 0
Q2 2026	0	0 / 0	0 / 0
Q3 2026	1 · $103.47K	0 / 0	0 / 0
Q4 2026	0	0 / 0	0 / 0

Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.

All AMPH insider, congress, 13F and analyst activity

Date	Source	Who	Action	Shares	Value / amount	1W	1M	Story
Sep 21, 2026	Insider	Peters William JCFO, EVP & TREASURER	Sell (Open-market sale) 10b5-1	4.14K sh	$103.47K	+11.9%		—
Jun 29, 2026	Analyst	B of A Securities	Lowers to sell		PT $20	-5.3%	-0.6%	Read
Jun 29, 2026	Analyst	B of A Securities	Lowers to sell		PT $20	-5.3%	-0.6%	Read

1W / 1M / 6M = how AMPH moved from the trade or filing date.

Insider trading in AMPH: who is buying and selling

Insider	Role	Trades	Open-market net	Shares held	Last trade
Peters William J	CFO, EVP & TREASURER	1	-$103.47K		Sep 21, 2026

Analyst ratings on AMPH

Date	Firm	Action	Rating	Price target	1W	1M	6M	Story
Jun 29, 2026	B of A Securities	Lowers	sell	$20	-5.3%	-0.6%		Read
Jun 29, 2026	B of A Securities	Lowers	sell	$20	-5.3%	-0.6%		Read

Frequently asked questions

Are AMPH insiders buying or selling?

Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 1 insider made 1 open-market sale worth $103.47K, a net -$103.47K.

What is the latest insider trade in AMPH?

Peters William J, CFO, EVP & TREASURER filed a sell (open-market sale) of 4.14K sh worth $103.47K on Sep 21, 2026.

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Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.

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